紫花苜蓿对杜长大生长肥育猪生长性能及胴体品质的影响  

Effect of Alfalfa on the Growth Performance and Carcass Quality of DLY Growing-finishing Pigs

作　　者：许娅虹 孔凡勇 周仕钰 马云章 李宁仙 苏建伟 杨汝和 李冽 赵天永 张护 曹林 

机构地区：[1]云南省个旧市畜牧技术推广站,云南个旧661000 [2]云南省红河哈尼族彝族自治州畜牧技术推广站,云南红河哈尼族彝族自治州661100

出　　处：《养猪》2014年第2期13-17,共5页Swine Production

基　　金：云南省现代农业生猪产业技术体系建设项目[云财农(2012)157号]

摘　　要：为研究紫花苜蓿鲜草对生长肥育猪生长性能和胴体品质的影响，选择体重60 kg左右健康的杜长大生长肥育猪60头，采用完全随机化设计分为4个处理，每个处理3个重复，每个重复5头猪，对照组不饲喂紫花苜蓿鲜草，3个试验组分别在饲粮中添加10％、15％、20％紫花苜蓿鲜草。结果表明，试验各组间的均增重和日增重差异不显著（P〉0.05）；料重比随着紫花苜蓿鲜草添加量的增加而增大，其中20％紫花苜蓿组显著高于10％紫花苜蓿组（P＜0.05）；每千克增重所需饲料成本，10％、15％、20％紫花苜蓿组分别比对照组降低13.43％、12.21％、14.24％。干物质消化率随着紫花苜蓿鲜草添加量的增加而降低，20％紫花苜蓿组极显著低于对照组（P＜0.01）；粗蛋白质消化率随着紫花苜蓿鲜草添加量的增加而降低，对照组最高，极显著高于3个试验组（P＜0.01）；粗纤维消化率随着紫花苜蓿鲜草添加量的增加而提高，以20％紫花苜蓿组最高，极显著高于对照组和10％紫花苜蓿组（P＜0.01）。血清总蛋白、血糖、总胆固醇、甘油三酯、高密度脂蛋白4组间差异不显著（P＞0.05）；血清尿素氮，对照组与10％紫花苜蓿组、20％紫花苜蓿组间差异不显著（P＞0.05），但显著高于15％紫花苜蓿组（P＜0.05）；3个试验组间差异不显著（P＞0.05）。屠宰率、皮率、骨率、3点平均背膘厚、6～7肋背膘厚、眼肌面积、皮厚、胴体斜长、胴体直长及前、中、后躯占胴体重，各组间差异不显著（P＞0.05）；瘦肉率，3个试验组高于对照组，但差异不显著（P＞0.05）；肥肉率，3个试验组低于对照组，但差异不显著（P＞0.05）。小肠长和小肠重、大肠长和大肠重、肾重、心重、肺重、膀胱重，各组间差异不显著（P＞0.05）；胃重，3个试验组间差异不显著（P＞0.05），但均高于对照组，其中10�This experiment was to study the effect of alfalfa grass on the growth performance and carcass quality of growing-finishing pigs.Sixty healthy growing-finishing pigs with the same height of 60 kg were randomly allo-cated to 4 treatments with 3 replicates of 5 pigs per replicate.The control group was not fed with the alfalfa grass,while 10%,15% and 20% proportion of alfalfa grass were added in the diet of the pigs in 3 experimental groups,respectively.Results showed that there was no significant difference in average gain and average daily gain between the experimental groups（P〉0.05）.With the increasing of the proportion of alfalfa grass,the feed con-version ratio increased,and the 20% proportion of alfalfa grass group was significant higher thanthe 10% propor-tion of alfalfa grass group （P〈0.05）.The feed costs per kilogram weight of the 10%,15%,20% proportion of alfalfa grass groups decreased 13.43%,12.21%and 14.24%than the control group,respectively.With the adding propor-tion increasing,the dry matter digestibility decreased,the 20% proportion of alfalfa grass group was extremely sig-nificant lower than the control group（P〈0.01）.With the adding proportion increasing,the crude protein digestibility decreased,the control group was the highest,and was extremely significant higher than the 3 experimental groups （P〈0.01）.With the adding proportion increasing,the crude fiber digestibility rate increased,the 20% proportion of alfalfa grass group was the highest,and was extremely significant higher than the control group and the 10% pro-portion of alfalfa grass group （P〈0.01）.There was no significant difference in serum total protein,blood glucose,to-tal cholesterol,triglycerides and high-density lipoprotein cholesterol between the four groups （P〉0.05）.There was no significant difference in serum urea nitrogen between the control group and the 10% and 20% proportion of alfalfa grass groups （P〉0.05）,but the control group was significant higher than the 15% proportion of alfalfa

关 键 词：紫花苜蓿鲜草 生长肥育猪 生长性能 消化率 血液指标 胴体品质 

分 类 号：S828.5[农业科学—畜牧学]